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$621+ Cheap flights from Porto Alegre (POA) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
POA — SEA
May 29 — Jun 51
Fri 5/29
Fri 6/5
1 adult, Economy
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Cheap flight deals from Porto Alegre to Seattle

Cheapest flights from Porto Alegre to Seattle
Explore the most affordable flight options available from Porto Alegre to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.

This Copa Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/31:15 am
POA
-
SEA
2 stops25h 55m
Copa Airlines
Sat 9/57:35 pm
SEA
-
POA
2 stops24h 45m
Copa Airlines
Deal found 4/27$905
This GOL deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:25 pm
POA
-
SEA
2 stops33h 55m
GOL
Wed 8/1911:48 am
SEA
-
POA
2 stops23h 47m
GOL
Deal found 4/24$917
This GOL deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:25 pm
POA
-
SEA
2 stops20h 43m
GOL
Thu 9/2410:17 am
SEA
-
POA
2 stops25h 18m
GOL
Deal found 4/27$925
This LATAM Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/75:50 pm
POA
-
SEA
2 stops32h 10m
LATAM Airlines
Wed 6/178:05 am
SEA
-
POA
2 stops30h 10m
LATAM Airlines
Deal found 4/24$970
This Copa Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:20 am
POA
-
SEA
2 stops24h 36m
Copa Airlines
Fri 9/256:51 pm
SEA
-
POA
2 stops25h 29m
Copa Airlines
Deal found 4/28$974
This LATAM Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/124:45 am
POA
-
SEA
2 stops21h 20m
LATAM Airlines
Fri 6/198:25 am
SEA
-
POA
2 stops22h 50m
LATAM Airlines
Deal found 4/28$978
This LATAM Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:05 pm
POA
-
SEA
2 stops21h 53m
LATAM Airlines
Sun 9/278:25 am
SEA
-
POA
2 stops28h 35m
LATAM Airlines
Deal found 4/27$982
This LATAM Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:40 am
POA
-
SEA
2 stops40h 53m
LATAM Airlines
Mon 9/218:25 am
SEA
-
POA
2 stops25h 50m
LATAM Airlines
Deal found 4/27$985
This Copa Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/71:20 am
POA
-
SEA
2 stops22h 28m
Copa Airlines
Sun 5/241:30 pm
SEA
-
POA
2 stops30h 50m
Copa Airlines
Deal found 4/28$1,025
This LATAM Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/192:20 pm
POA
-
SEA
2 stops28h 30m
LATAM Airlines
Sat 7/48:40 am
SEA
-
POA
2 stops29h 35m
LATAM Airlines
Deal found 4/28$1,056
This LATAM Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:25 am
POA
-
SEA
2 stops30h 40m
LATAM Airlines
Mon 9/218:25 am
SEA
-
POA
2 stops25h 50m
LATAM Airlines
Deal found 4/27$1,067

Find flight deals from Porto Alegre to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 29, 2026.

Round-trip from

$905
(Copa Airlines)

One-way from

$621
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$633
From Porto Alegre Salgado Filho to Seattle/Tacoma Intl
Search Deals
One-way flight from Porto Alegre Salgado Filho to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($198 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto Alegre to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2026.
Use the filters below to find and compare flights from Porto Alegre to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Mon 8/3

1:15 am-11:10 pm

2 stops25h 55m

Seattle/Tacoma Intl

Sat 9/5

5:22 pm-12:20 am

2 stops26h 58m

$905

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Tue 8/11

1:15 am-11:24 pm

2 stops26h 09m

Seattle/Tacoma Intl

Wed 8/19

1:19 pm-12:15 am

2 stops30h 56m

$905

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 8/12

6:25 pm-12:20 am

2 stops33h 55m

Seattle/Tacoma Intl

Wed 8/19

11:48 am-3:35 pm

2 stops23h 47m

$917
Quickest round-trip

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Mon 9/14

6:25 pm-11:08 am

2 stops20h 43m

Seattle/Tacoma Intl

Thu 9/24

10:17 am-3:35 pm

2 stops25h 18m

$925

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Wed 9/16

5:50 pm-2:43 pm

2 stops24h 53m

Seattle/Tacoma Intl

Mon 9/21

8:25 am-2:15 pm

2 stops25h 50m

$1,070

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Thu 6/18

7:50 pm-2:50 pm

2 stops23h 00m

Seattle/Tacoma Intl

Sat 7/4

7:15 am-11:15 am

2 stops24h 00m

$1,070

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Fri 6/19

5:30 pm-12:08 am

2 stops34h 38m

Seattle/Tacoma Intl

Sat 7/4

1:56 pm-3:35 pm

2 stops21h 39m

$1,161
Cheapest one-way
Quickest one-way

Porto AlegreSeattle

POA - SEA

POASEA

Porto Alegre Salgado Filho

Mon 7/13

5:30 pm-10:39 am

3 stops45h 09m

$621

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Sorted by cheapest first

Best time to book a flight from Porto Alegre to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Porto Alegre with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Porto Alegre to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Porto Alegre to Seattle?

    Copa Airlines and GOL can get you from Porto Alegre to Seattle in just under 25h 55m. Your travel time can differ by up to 8h. There are 6926 mi between Porto Alegre and Seattle. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Porto Alegre to Seattle that include hotel bookings?

    Yes. In addition to deals on Porto Alegre to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto Alegre to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto Alegre to Seattle.

  • Can I find deals for business class flights from Porto Alegre to Seattle?

    Yes. Cheapflights offers flight deals from Porto Alegre to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

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